Last Updated
：2025/12/05
Fisher information
Noun
uncountable
Japanese Meaning
統計学において、確率変数Xが分布の未知パラメータθに関して持つ情報量の尺度。具体的には、スコア関数（尤度の対数の微分）の分散、または観測情報の期待値として定義される。
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(statistics) A measure of the amount of information that an observable random variable X carries about an unknown parameter θ of a distribution that models X. Formally, it is the variance of the score, or the expected value of the observed information.
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Fisher information
Computing the Fisher information for the model helped determine how precisely we could estimate the parameter θ from the observed data.
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Computing the Fisher information for the model helped determine how precisely we could estimate the parameter θ from the observed data.
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